Yuna Himekawa, a government investigator, infiltrates an enemy hideout alone to rescue a colleague captured by a certain drug organization. Although Yuna manages to save her colleague, she is caught by the organization's boss at the last moment and forced to take the drugs manufactured by the group. The effects of the drugs are immense, causing Yuna's entire body to convulse with stimulation that she struggles to endure. The men then subject her to various tortures…
